Lamp shade and method for making the same



Dec.26, 1933. J, M. ANGELETTI Filed March 31, 1932 Patented Dec. 26, 1933 1 1 ,7

UNITED STATES ,PATENTOFFICE LAMP SHADE ANDVMETHOD FOR MAKING THE SAME V Y Joseph M. Angeletti, New York, N. Y. Application March 31, 1932. Serial No. 602,263, 10 Claims. (Cl. 240-108) This invention; relates more particularly to said arms-is a transverse bar 12 which is prefaccordion-plaited lampshade-coverings, I and erably of a rectangular cross sectional form. Adthe main object of the improvement is to projustably supported on said bar are two complevide a covering of the above character capable mental pairs of arms 13 and 1 4 which extend of being expanded for use without the necessity downwardly from the bar. Arms 13 have of a supporting frame which is indispensable bearings 15 which have an inclination toward a with accordion-plaited lamp-shade-coverings of common centerand rotatably support wheels 16 the ordinary construction. which are formed with a cylindrical V shape Another object of the invention is to form groove 17. a p

1 said covering, with a circumferentially expan- I 1 Arms 14 have a portion 18v bent angularly tosible flange portion which, in addition to renderward arms 13, and at the bent portion of said ing the covering self-supporting, increases the arms is a socket 19 to receive the shank portion decorative appearance of the covering when ex- 20 of bearings 21 which rotatably support wheels panded for use. v 22, the latter formed .with a cylindrical V shape The invention contemplates "also the provision edge to rotate in grooves 1'7 of wheels 16. Screws 7 of a preferred means to economically fold a lon- 23 threadedon sockets 19 abut against flat porgitudinal marginal portion of the material formtion 24 ofv shanks to secure the same in ading the covering, before plaiting the same. The justed positions. Preferably formed on transillustrated and described means are not claimed verse bar ;12 are graduations 25 to facilitate 20 in this application and that the same may be transverse adjustments of saidi wheel-bearing of any other suitable construction. arms to allow different widths of strip material Other objects will be apparent as the descripe 26 to be fed through said wheels, thence through tion proceeds. V the plaiting machine. Said material may con- In the'drawing:-- v sistof stiff paper, parchment-paper, stiff tex- 25 Fig. 1 is a side detail view of one form of plaited tile, or any other plaitable strip material suitable so lamp shade covering embodying my invention. for lamp-shades, be it plain, printed, or otherwise expanded for use. decorated materials. Fig. 2 is a front detail view of the scoring and The operation of the above described device is folding device used in the production of the lamp as follows:- I f. i shade covering embodiedby my invention. Knowing the width of the strip of material 26,

Fig. 3 illustrates one of the scoring and folding and the widthof the longitudinal marginal p0 wheels and associated bearing used in the scortions 27 and 28 to be scored and folded, I set the ing and folding device, removed; I wheels of said device accordingly, guided by grad- Fig. 4 is a perspective of a folded and plaited nations 25 on bar 12, and of course, the material 35 blank f rmin the covering. V I supplyroll is set in linewith the adjusted de 90 Fig. 5 is a fractional side elevation of the cove vice. The strip is inserted between said wheels, ering mounted on a lamp-bearing-top. 7 as at Fig. 2, and the scoring-pressure for the ma- Fig. 6 is axperspective of the complete lampterial is also regulated by lifting or lowering shade-covering embodied by my invention, when wheels 22 through the medium of their hearing its plaits are contractedand binded for packing; shank portion which is bossed by screws 23, so as 95 or-transportation. 1 v i to bring, the peripheral or cylindrical V shape Fig. 7 is a diagrammatic illustration showing edge of the wheels nearer to or farther from the three-of the various shapes this covering may be grooves of wheels 16, according to the thickness made by simply varying the dimension of the of. the material; The folded forward end of the two relative portions of the covering. r latter isthen advanced alternately above and be- Describing the preferred means for producing low material stretching or tensioning transverse the lamp-shade-covering embodied by my inrods or bars (not shown) but which accordionvvention, reference may be. had to the scoring plaiting machines have, and which are equipped and-folding device shown in Fig. 2, which comwithv side-guides adjustable on said rods or bars.

prises, lateral supporting arms 10 and 11,-pref- The strip is further advanced between said guides 5 erably secured rearwardly at the sides of a plaitwhich are set inline with said device. The scored ingmachine (not shown) and in line with the and folded portions 27 and 28 will then be suftravel ormotion of. the web or strip drawn from ficiently flattened and so; inserted between the a material supply roll (not shown) and which pusher-bar and cooperating plate of the plaitis to be plaited by said machine. Secured on ing machineby the actuation of which, the strip 11 material is continuously pulled from the supplyroll and thru said device, and plaited transversely of the folds. The folded and plaited strip is then cut into blanks according to the number of the plaits the covering is wanted to contain, one of said blanks is shown in Fig.4. The blank is then joined annularly bysecuring end-plait 29 above end-plait 30, in any suitable manner, or by staples 31, as at Fig. 1, with folded portion 27 capable, of being expanded outwardly from the interior of the annular covering. The latter is then contracted with folded portion 27 at its norma'l folded position, as at-Fig. (i te -form pera forations 32 throughout all'of the'plaitsand thru folded portion 28, by means of a suitable drilling or perforating machine, said perforations tore ceive a binding element 33,. which maybe of any suitable construction, though, in the preferred embodiment, the binding element is of an elastic construction and pre-adjusted by knotting the same, as at 34 Fig.6, to, limit itsexpansion, at the same time to force the perforated end portion of the plaits against thefrusto-conical annularflange portion 3 5 of a lamp-bearing-element 36,

i which may be of any suitable construction,-in a circumferentialcontracted position, as atFig. 5. In the form illustrated, the-top-element is formed 'with anannular rim portion 37,which encircles the narrow annular'portion of flangeand projects outwardly tobear above the contracted end portion of the plaits, forming retaining con- 7 nection therewith; The outer edge of said rim is preferably curled: or beadedasat 38, toprevent injury to thecoyering when the rim portion is forced from the interior throughout the contracted end of the covering. Fastened on fiange 35,

is a lamp-bearing member 39 which may be of any desired form, the one; illustrated is usually employed on table-lamps. As the above described covering retains its, circumferentialexpanded-p0 sition when folded portion27 is expanded, as at Fig. 1, it is obvious, thatinserting the reduced or contact portionof an ordinary electric-lamp thru the contracted end of the covering, and" screwing the lamp to thelamp-socket, the covering'is actually mounted for use. [It is also-to be understood that while the above"description hasbeen confined in the usability of this covering 7 without theemployment of frames, as are indispensable for the ordinary-plaited lamp-shade coverings, the one embodied by my invention, is

also capable to receiveand bind with frames of.

any desired shape. As obvious; folded portion 28 serves only to have both longitudinal .rnarginal portions of the web or strip material of same thickness, to equalize its feed thrusaid parts and thru the plaiting machine. Said additional folded portion however, renders the perforated portion of the plaits stronger, rendering possible the use of a stronger elastic-binding element.

Diagramm'atic Fig. 7, shows a fewexamples of the various shapes thi'scovering may be made, by simply varying the dimension of the folded portion 27, and that of the upperportion'of the plaits,

I while retaining the same number of "plaits which determines the diameter of the coveringyasfin dotted lines 1--1, 22 and 3-3.

-As it maybe easily seen in the drawing, when folded portion27 is expandedoutwardly circumferentially, the upper transverse edges 49, of

" its plait portions, will be downwardly disposed, but in line with thelower transverse edges 41'of the contracted plait portion of the" covering. "Said counter-plait-point at the circumferentially expanded fold, causes" the latter to retain expand 'f-lgA lamp-shade covering, comprising a stripmaterial formed with a rectilinearly folded longitudinal marginal portion accordion-plaited transversely together with the other longitudinal portion of the strip, joined annularly by the end plaits with the folded portion capable of being expanded circumferentially to force that end of the plaits to retain expanded position, and means contracting the other end of the plaits. 1

2.. The combination with anaccordion-plaited lamp shade covering, formed with 'a circumferential series of perforations throughout all of the plaits at one end of the covering to receive a bind ing element to contract said end of the covering, of a longitudinally folded and transversely plaited marginal portion at the second. end of the covering capable of being expanded circumferentially outwardly from the interior of the covering to retain. expanded position'when the same is joined annularly byits end-plaits.

. 3. An accordion-plaited lamp shade covering, consisting of a stiff material strip formed with a longitudinally folded marginal portion plaited transversely with the other portion of the strip and joined annularly by theend plaits with the folded portion interiorly thereof and capable of being expanded circumferentially to keep that end of the plaits expanded and returnable to its normal folded positionto contract the covering and means contracting the opposite end of the plaits.

4. A lamp shade covering, consisting of a stiff material strip formed with two longitudinally folded 'marginal portions accordion-plaited transversely of the folds together with the other portionof the strip and joined annularly by its transverse end plaits with the folded portions interiorly thereof, one of s'aidfolded and plaited portions capable of being expanded outwardly circumferentially from the interior of the covering to keep that end of the plaits expanded circumferentially, and a binding element at the other folded portion to contract the second :end of the plaits and-bind the same against a supporting element.

5. As a new article of manufacture, a stiff material strip rectilinearly folded marginally lengthwise and accordion-planed transversely to form 1 a lamp-shade capable to retain expanded position when the strip is joined annularly by the endplaits with the folded portion expanded circumferentially. Y

6.'As a new article of manufacture, a stiff- L material-strip rectilinearly folded onboth longitudinal margins'thereof, flutes or plaits formed on'the strip transversely with said folds to forma lamp-shade capable to retain expanded position, T without the employment of a supporting frame, when the'strip is'joined annularly by the end iiutesor plaits with one of the longitudinal folds expanded circumferentially,

flutes or plaits crossingthe other longitudinal fold and means comprising perforations throughout all of the to receive a binding element to contract that end of the flutes or. plaits.

'7. A lamp shade covering, consisting of a stiff material strip formed with two longitudinally folded marginal portions accordion-plaited transversely of the folds together with the other portion of the strip, and joined annularly by its transverse end plaits with the folded portions interiorly thereof, one of said folded and plaited portions capable of being expanded outwardly circumferentially from the interior of the covering to bring the upper edge of the plaits of the expanded fold in a perpendicular relation with the lower edge of the other portion of the plaits expanding the fold-line circumferentially, a series of perforations throughout all of the plaits crossing the other folded portion circumferentially, an elastic string or cord inserted thru said perforations with its end portions projecting outwardly from an adjacentpair of said perforations, and a knot at the projecting portions of said string or cord to contract the plaits and yield at the insertion of a lamp bearing top element interiorly of the contracted portion.

8. A lamp-shade covering of the class described, comprising a strip material formed with a plurality of rectilinearly scored longitudinal folds to reinforce the same, and flutes or plaits formed on the strip transversely with said folds.

9. A lamp-shade of the class described, comprising a strip material formed with a plurality of rectilinearly scored longitudinal folds, flutes or plaits formed on the strip transversely with said folds, joined annularly by the end flutes or plaits with one of the longitudinal folds capable of being expanded circumferentially to cause expansion atthe adjacent end of the flutes or plaits.

10. The method for preparing the strip-material blank for a lamp-shade-of the class described, which consists in scoring and folding the strip marginally lengthwise as the same is pulled V or drawn from a strip-material supply roll by the action of a plaiting machine which plaits the folded strip transversely, and then cutting the folded and plaited strip into blanks of desired lengths. e

JOSEPH M. ANGELETTI'. 

